| Evaluation on the drought resistance mechanism of spring wheat “Heshangtou” |
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| DOI：10.7606/j.issn.1000-7601.2017.04.37 |
| Key Words: spring wheat drought physiological drought resistance evaluation |
| Author Name | Affiliation | | YANG Qian | Northwest Institute of Plateau Biology, China Academy of Sciences, Xining, Qinghai 810008, China
Key Laboratory of Adaptation and Evolution of Plateau Biota, China Academy of Sciences, Xining, Qinghai 810008, China | | WANG Hai-qing | Northwest Institute of Plateau Biology, China Academy of Sciences, Xining, Qinghai 810008, China
Key Laboratory of Adaptation and Evolution of Plateau Biota, China Academy of Sciences, Xining, Qinghai 810008, China | | CHEN Zhi-guo | Northwest Institute of Plateau Biology, China Academy of Sciences, Xining, Qinghai 810008, China
Key Laboratory of Adaptation and Evolution of Plateau Biota, China Academy of Sciences, Xining, Qinghai 810008, China | | LIU De-mei | Northwest Institute of Plateau Biology, China Academy of Sciences, Xining, Qinghai 810008, China
Key Laboratory of Adaptation and Evolution of Plateau Biota, China Academy of Sciences, Xining, Qinghai 810008, China |
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| Abstract: |
| To explore drought resistance mechanism of “Heshangtou”, a dryland spring wheat variety, drought stress (20% PEG-6000) was used to investigate leaf water content (LWC)，proline content, electrolyte leakage(EL) and MDA content, with “Plateau 448” and “Ningchun No. 4” being the control. The results indicated“Heshangtou”showed relatively higher LWC, proline content, lower EL and MDA content, compared with the control. Under the condition of 48 h drought, the LWC and proline content of “Heshangtou” were significantly higher, and MDA content was significantly lower than the control. Additionally, no significant EL was observed between “Heshangtou” and “Ningchun No.4”, while significantly lower EL than “Plateau 448” showed in “Heshangtou”. The three varieties could be distinguished by physiological index based on cluster analysis. In terms of comprehensive evaluation on drought resistance, the three varieties were ranked in the sequence of “Heshangtou”, “Ningchun No. 4”, and “Plateau 448” from high to low. |
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